The two codes are from the same bank JPMORGAN CHASE BANK. There is no difference between CHASUS33xxx and CHASUS33. XXX is a sub-code, usually a 3-digit number representing different branches of the same bank.

International remittance codes: Generally speaking, the most commonly used code in international remittances is the SWIFT code between banks. SWIFT codes have the widest coverage internationally. Other famous ones include the European-wide IBAN code and the American ABA code. Each code represents a bank.

International wire transfer is when the remittance bank sends a deposited telegram or telex to a branch or agency bank (remitting bank) in another country in response to the remitter's request, instructing it to pay a certain amount to the recipient. A method of remittance for the payer.

The basic procedures and procedures for international wire transfer are:

The remitter fills out the wire transfer application form, pays the payment to the remittance bank, and obtains a wire transfer receipt.

The remittance bank sends a telegram or telex to the remittance bank with a deposit, and sends the telegram confirmation to the remittance bank for verification of the message.

The remittance bank receives the telegram, checks that the secret deposit is consistent, and prepares a wire transfer advice to notify the payee to withdraw the money.

The payee brings the notice in duplicate to the remittance bank to withdraw the money. The payee's receipt must be stamped and handed over to the remittance bank, which will then be able to pay the remittance.

The remitting bank will send the paid debit notice to the remitting bank to complete a wire transfer.